再见
zài jiàn
goodbye
see you again later
again (再) + see (见) = goodbye, see you again
见 depicts a person (儿) with a prominent eye (冂 suggesting the frame of vision), capturing the act of seeing or meeting. Together, 再见 literally promises another meeting — making it a farewell with return built in.
他说了声再见就走了。
tā shuō le shēng zài jiàn jiù zǒu le。
he said goodbye and left.
我们在门口互相说再见，然后各自回家。
wǒ men zài mén kǒu hù xiāng shuō zài jiàn，rán hòu gè zì huí jiā。
we said goodbye to each other at the door, then each went home.